src/glut/glx/glut_tablet.c

   1
   2 /* Copyright (c) Mark J. Kilgard, 1994. */
   3
   4 /* This program is freely distributable without licensing fees
   5    and is provided without guarantee or warrantee expressed or
   6    implied. This program is -not- in the public domain. */
   7
   8 #include <stdlib.h>
   9
  10 #include "glutint.h"
  11
  12 void GLUTAPIENTRY
  13 glutTabletMotionFunc(GLUTtabletMotionCB tabletMotionFunc)
  14 {
  15   __glutCurrentWindow->tabletMotion = tabletMotionFunc;
  16   __glutUpdateInputDeviceMaskFunc = __glutUpdateInputDeviceMask;
  17   __glutPutOnWorkList(__glutCurrentWindow,
  18     GLUT_DEVICE_MASK_WORK);
  19   /* If deinstalling callback, invalidate tablet position. */
  20   if (tabletMotionFunc == NULL) {
  21     __glutCurrentWindow->tabletPos[0] = -1;
  22     __glutCurrentWindow->tabletPos[1] = -1;
  23   }
  24 }
  25
  26 void GLUTAPIENTRY
  27 glutTabletButtonFunc(GLUTtabletButtonCB tabletButtonFunc)
  28 {
  29   __glutCurrentWindow->tabletButton = tabletButtonFunc;
  30   __glutUpdateInputDeviceMaskFunc = __glutUpdateInputDeviceMask;
  31   __glutPutOnWorkList(__glutCurrentWindow,
  32     GLUT_DEVICE_MASK_WORK);
  33 }